Spatial and temporal vision of macaques after central retinal lesions
Journal Article
·
· Invest. Ophthalmol. Visual Sci.; (United States)
OSTI ID:5239635
Spatial contrast and temporal modulation sensitivity of two macaque monkeys were measured at three luminance levels before and after binocular laser coagulation of the fovea. The radius of the lesions ranged from 1.6 to 2.2 degree from the center of the fovea. After placement of the lesions, the visibility of high spatial frequencies was greatly reduced, although sensitivity at middle and low spatial frequencies was unaffected. No loss of spatial resolution was found at the lowest luminance tested. When temporal modulation sensitivity was tested with 4 deg targets, foveal lesions had no effect at any temporal frequency or luminance. However, with a 0.57 degree target, sensitivity to lower temporal frequencies was impaired. Thus visual loss after destruction of the fovea is limited to high luminance, small targets, and the resolution of fine detail.
- Research Organization:
- Univ. of Rochester, NY
- DOE Contract Number:
- AC02-76EV03490
- OSTI ID:
- 5239635
- Journal Information:
- Invest. Ophthalmol. Visual Sci.; (United States), Journal Name: Invest. Ophthalmol. Visual Sci.; (United States) Vol. 21:1; ISSN IOVSD
- Country of Publication:
- United States
- Language:
- English
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550200 -- Biochemistry
560121* -- Radiation Effects on Cells-- External Source-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL EFFECTS
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BODY
BODY AREAS
ELECTROMAGNETIC RADIATION
EYES
FACE
HEAD
KINETICS
LASER RADIATION
MACACUS
MAMMALS
MONKEYS
ORGANS
PRIMATES
RADIATION EFFECTS
RADIATIONS
RADIOSENSITIVITY EFFECTS
REACTION KINETICS
RESOLUTION
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SENSE ORGANS
SPATIAL RESOLUTION
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VISION
560121* -- Radiation Effects on Cells-- External Source-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL EFFECTS
BIOLOGICAL MODELS
BIOLOGICAL RADIATION EFFECTS
BODY
BODY AREAS
ELECTROMAGNETIC RADIATION
EYES
FACE
HEAD
KINETICS
LASER RADIATION
MACACUS
MAMMALS
MONKEYS
ORGANS
PRIMATES
RADIATION EFFECTS
RADIATIONS
RADIOSENSITIVITY EFFECTS
REACTION KINETICS
RESOLUTION
RETINA
SENSE ORGANS
SPATIAL RESOLUTION
VERTEBRATES
VISION